BoilerFaultCodesWarmhaus rE06 Fault Code
Also written as RE06 — same fault.
The Warmhaus rE06 fault code means: your boiler is not starting because it cannot light the gas flame needed to heat your water.. It appears on 1 Warmhaus model in our database.
Technical description: No ignition – control gas supply line valves could be open
What causes the Warmhaus rE06 fault?
This fault occurs when the boiler attempts to start but cannot detect a flame after several attempts. It is usually caused by a lack of gas reaching the burner, a faulty spark plug that cannot ignite the gas, or a sensor that fails to tell the boiler that a flame is present.
This issue can occur in winter if the external gas regulator freezes or if the gas meter is under-delivered during periods of high demand.
DIY fix possible
Check that your gas emergency control valve (lever) is in the 'on' position.If you have a prepay gas meter, ensure you have sufficient credit.Check if other gas appliances in your home, like a hob, are working correctly.Press and hold the 'R' or reset button to see if the boiler restarts.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Warmhaus models that show the rE06 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Warmhaus rE06 fault code information on this page is sourced and cross-checked against the official Warmhaus service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026